feat(graphql/versioning): Add versioning support to graphql; mutations return version set

[asikowitz]

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[yoonhyejin]

@asikowitz just curious -- is there a reason that we defined aliases as a non-nullable field? (even with the empty array?)

[asikowitz]

In general it's nice when there are fewer null states to deal with. I don't think there's a functional difference between an empty list of aliases and a null list of aliases, so we just assign aliases to empty list by default. Ultimately, this is reflecting the type in the modeling layer which is non-null

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files with missing lines	Coverage Δ
datahub-web-react/src/Mocks.tsx	100.00% <100.00%> (ø)
datahub-web-react/src/appConfigContext.tsx	100.00% <100.00%> (ø)

... and 5 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 7eaadb0...ae1a957. Read the comment docs.